The cost of the G20 summit, as far as we know, will be around £19 million. Security costs are bound to escalate if reinforcements are needed which is at least possible. We know from demonstrations at previous G20 meetings that legitimate demonstrations are often hi-jacked by provocative anarchist thugs of all political shades. We must pray that this doesn’t happen and that the meetings will go ahead peacefully but also produce real progress in alleviating the dire global economic situation. This seems a bit doubtful in the light of the leaked but hastily withdrawn draft of the final communiqué. Let the legitimate demonstrators against politicians and bankers through but we must curb chaos.